True or false? it is possible for a system of linear equations to have exactly two solutions.

What is the measure of angle 1? a.28 b.152 c.168 d.64

Find the solution to this system 2,1 1,-2 1,2 -1,2

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.